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Schunn, C.D., Reder, L.M., Nhouyvanisvong, A., Richards, D.R., & Stroffolino, P.J. (1997). To Calculate or Not Calculate: A Source Activation Confusion (SAC) Model of Problem-Familiarity's Role in Strategy Selection. Journal of Experimental Psychology: Learning, Memory, & Cognition, 23, 1-27. [lead article]
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